. >>> just three days before she was killed, carmen smith told family and friends she had been calledby waseem daker, the man who had been arrested for stalking her neighbor. it was the strongest allegation yet connecting the victim to the suspect. investigators tipped off about that call by lottie now closed in on zaccer. >> did you execute a search warrant on his house that night? >> we did. >> john dawes is a homicide detective with the cobb county police department. >> in his room, we found a piece of paper with the address where this crime occurred. we found a torn up letter that was his words to lottie spencer. >> daker's torn-up letter to lottie was hateful, and threatening. prosecutor jesse evans. >> he specifically talks about having plans and backup plans to exact revenge on lottie and the worst part about the letter is he gets to the end and says i'm going to let you live. i'm going to get revenge on you, but i'm go to let you live. >> to police and prosecutors, this wasn't just a rant. it looked like a blueprint for murder. now they tried to link daker to the crime scene.